This Sept. 3, 2008 file photo shows Bristol Palin, daughter of Alaska Gov. Sarah Palin and former... 
(Charles Rex Arbogast/AP Photo)
The 18-year-old daughter of former Republican vice presidential candidate Sarah Palin has given birth in Alaska to a son.
People magazine reports that Bristol Palin gave birth to Tripp Easton Mitchell Johnston on Sunday. He weighed 7 pounds, 4 ounces.
Relative Colleen Jones tells the magazine the baby is fine and Bristol is "doing well." Jones is the sister of Bristol's grandmother.
The father is Levi Johnston, a former hockey player at Alaska's Wasilla High School. He has said he and Bristol plan to marry.
Palin created a stir in September by announcing the pregnancy as she prepared to accept her nomination at the Republican National Convention.
The governor's office called the birth a private family matter.
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